Throw-off mechanism for the inking-rolls of rotary printing-presses.



THROW-OFF moamsm FOR '1' L. A. WHEAT. HE INKING ROLLS 0P ROTARY PRINTING PRESSES.

APPLICATION FILED APR. 3. 1909.

Patented Dec.7;1909.

2 SHEETS-SHEET v L. WHEAT. THROW-OFF MEOHANISM FOR THE INKING ROLLS 0P ROTARY PRINTING PRESSES.

APPLICATION FILED APR- 3, 1909.

Patented Dec. 7, 1909.

' 2 SHEETS-SHEET 2.

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LYMAN A. WHEAT, OF BATTLE CREEK, MICHIGAN.

THROW-OFF MECHANISM FOR THE INKING'r-ROLLS OF ROTARY PRINTING-PRESSES.

Specification of Letters Patent.

Patented Dec. 7, 1909.

Application filed April 3, 1909. Serial No. 487,675.

To all whom it may concern:

Be it known that I, LYMAN A. WHEAT, a citizen of the United States, residing at the city of Battle Creek, Calhoun county, State of Michigan, have invented certain new and useful Improvements in Throw-Off Mechanism for the Inking-Rolls of Rotary Printing- Presses, of which the following is a specification.

This invention relates to improvements in throw-01f mechanisms for the inking rolls of rotary printing presses.

The objects of this invention are to provide a simple, efiicient and rapid-operating throw-off mechanism which swings the inkrolls out in such a manner that they are all readily accessible, by a single movement of the lever, and are so supported that they are substantially balanced on their supports.

Further objects relating to details of construction will appear from the description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawings, forming a part of this specification, in which Figure l is a detail view of the end portion of a rotary printing press embracing and embodying the features of my invention, the same being a front elevation view. Fig. 2 is a side sectional elevation, taken on a line corresponding to line 22 of Fig. 1, portions being indicated by dotted lines, and the shifted position of. the ink-rollers also being indicated by dotted lines. Fig. 3 is an enlarged detail sectional iew, taken on a line corresponding to line 33 of Fig. 2 showing the engagement of the pin in the slot.

In the drawing, similar numerals of ref erence refer to similar parts throughout the several views.

Referring to the numbered parts of the drawing, the base and end frame 1 are of the usual construction for a rotary printing press. The ink-drum 2 is supported on a suitable shaft 3. A stationary eccentric 4 is supported on the bushing of the shaft 3 beyond the end of the ink-drum 2. A plate 5 is journaled on this eccentric and is adj ustable thereon, being provided with an arm 6 extending downwardly and rear wardly from the said eccentric, and with a handle 6 projecting to the outer part of the printing press in convenient reach of the operator.

Ink-rolls 9 are supported in suitable bearings on a bar 8. The bar 8 is pivoted at 7 at its inner edge to the arm 6, and extends outwardly and downwardly underneath the ink-drum, where it is pivoted at 11 to the link 10. The link 10 is rigidly secured to a rock shaft 12 extending laterally across the machine and serving as a. supporting and actuating means for an exactly identical mechanism at the opposite end of the printing press. As the plate 5 is supported on the eccentric 4, it will be seen that when the lever 6 is raised up to the position indicated by dotted lines in Fig. 2, that it will immediately, owing to the fact that it is supportedon the eccentric 1, separate the inkrolls 9 from the ink-drum 2 and by a continued movement, swing the same to the position indicated by dotted lines in Fig. 2. The rolls will then be easily accessible and can also be taken from their bearings for repair, cleaning or any other purpose.

A pair of ductor rolls 1313 is supported on arms 14:, which are pivoted on pins 15 extending inwardly from the sides of the frame 1. These are arranged so that they contact with-the ink-drum 2 and deliver ink therefrom to the plate-roll 19. Pins 17 project inwardly from these arms 16 and engage cam-shaped slots 18 in the plate 5, so that, when the lever 6 is raised, these camshaped slots 18 act on the pin 17 and throw the arms which carry the rolls apart and out of contact with both the ink-drums and plate cylinder, as appears by dotted lines in Fig. 2. It will be seen from this arrangement that the control of the ink-rolls is perfect in my improved machine and they are readily thrown out of engagement, and made very accessible. The ink-drum is also made accessible, and also the ductor rolls, the advantage of which is very clear to any one conversant with the printing machine art.

I desire to state that the structure I have shown can be considerably modified in details without departing from my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. The combination with a printing press, of an ink-dlrum supported on a suitable shaft; ink-rollers arranged to contact With the same; a fixed eccentric on the bushing surrounding the shaft of the said ink-drum; a plate journaled on said eccentric and adapted to act thereon; an arm projecting from said eccentric plate; a bar supporting the inking rolls pivoted to said arm; a link extending down from the outer end of the bar pivoted. thereto; a rock shaft to which the said link is secured; ductor rolls supported on suitable arms which are pivoted to the inside of the frame; and inwardly projecting pins on said arms; and slots in said plate coacting with the pins on said arm to throw the ductor rolls out, all coact ing substantially as described and for the purpose specified.

2. The combination with a printing press, of an ink-drum supported on a suitable shaft; ink rollers arranged to contact with the same; a fixed eccentric on the bushing surrounding the shaft of the said ink-drum; a plate journaled on said eccentric and adapted to act thereon; an arm projecting from said eccentric plate; a bar supporting the inking rolls pivoted to said arm; a link extending down from the outer end of the bar pivoted thereto; and a rock shaft to which the said link is secured, all coacting substantially as described and for the purpose specified.

3. The combination with a printing press of an ink-drum supported on a suitable shaft; ink rollers arranged to contact with the same; a fixed eccentric on the bushin surrounding said shaft; a plate journalcd on said eccentric and adapted to act there on; means for swinging said plate; and connections from said plate to said ink rollers whereby they will be controlled by the operation of said plate on said eccentric coacting as specified.

4. The combination with a printing press, of an ink-drum supported on a suitable shaft; ink rollers arranged to contact with the same; a plate journalcd on said shaft and connected to control the said ink rollers; ductor rolls supported on suitable arms which are pivoted to the inside of the printing press frame; inwardly projecting pins on said arms; and slots in said plate coacting with said pins to throw the ductor rolls out, coacting as specified.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

LYMAN A. WHEAT. Ii 8.

Witnesses EDWIN G. LEWIS ERWIN W. SALISBURY. 

